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From Jonathan Haddad <...@jonhaddad.com>
Subject Re: Column value not getting updated
Date Tue, 31 Mar 2015 22:16:08 GMT
It's not enough to set up ntp, you're going to need to force the time to
sync.  ntp is only meant to correct for drift.

You can either use ntpdate or I think there's a flag for ntpd (that I can't
remember and am in a rush out the door) that you can use to force it to
adjust to the correct time.

On Tue, Mar 31, 2015 at 3:02 PM Saurabh Sethi <Saurabh_Sethi@symantec.com>
wrote:

> That’s what I found out that the clocks were not in sync.
>
> But I have setup NTP on all 3 nodes and would expect the clocks to be in
> sync.
>
> From: Nate McCall <nate@thelastpickle.com>
> Reply-To: "user@cassandra.apache.org" <user@cassandra.apache.org>
> Date: Tuesday, March 31, 2015 at 2:50 PM
> To: Cassandra Users <user@cassandra.apache.org>
> Subject: Re: Column value not getting updated
>
> You would see that if the servers' clocks were out of sync.
>
> Make sure the time on the servers is in sync or set the client timestamps
> explicitly.
>
> On Tue, Mar 31, 2015 at 3:23 PM, Saurabh Sethi <Saurabh_Sethi@symantec.com
> > wrote:
>
>> I have written a unit test that creates a column family, inserts a row in
>> that column family and then updates the value of one of the columns.
>>
>> After updating, unit test immediately tries to read the updated value for
>> that column, but Cassandra returns the old value.
>>
>>    - I am using QueryBuilder API and not CQL directly.
>>    - I am using the consistency level of QUORUM for everything – insert,
>>    update and read.
>>    - Cassandra is running as a 3 node cluster with replication factor of
>>    3.
>>
>>
>> Anyone has any idea what is going on here?
>>
>> Thanks,
>> Saurabh
>>
>
>
>
> --
> -----------------
> Nate McCall
> Austin, TX
> @zznate
>
> Co-Founder & Sr. Technical Consultant
> Apache Cassandra Consulting
> http://www.thelastpickle.com
>

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